Pump



Nom 18, 1924. L5T5JU3 A. J. ROSS VPUMP Filed Deo. l2. 19?.; 2 Sheets-Sheet 2 lll Patented Nov., lh, i924@ sarna ANDREW J. ROSS, FV LOS ANGELES, CALIFORNIA.

; 1 PUMP,

Application filed December 12, 1923.

TocZZ whom, t may concern.'

Be it known that I, ANDREW J. Ross, a citizen of the United States of America, and a resident of Los Angeles, county of Los Angeles, and State of California, have in vented certain new and useful Improvements in Pumps, of which the following is a full and clear specification. I

The object of this invention is to provide a duplex pump which is simple in construction, efficient and powerful in operation, and which will furnish aV continuous stream of water at high pressure, as more fullyv hereinafter set forth.

These objects and such others as may be hereinafter set forth are attained by the means illustratedin the drawings, and the invention consists in the parts and combinations of parts hereinafter fully described and particularly pointed out in the appended claims, reference being had to the accompanying drawings, forming part of the specification, in which the same reference numerals designate like parts throughout the several views.

In the drawings- Fig. 1 is a plan view of my improved pump;

Fig. 2 is a vertical longitudinal sectional view on the line 2-2 of Fig. l;

Fig. 3 is a vertical transverse sectional view on the line 3-3 of Figs. 2 and 3;

Fig. 4 is a horizontal sectional view taken on the line 4 4 of Fig. 3, showing only one end of the pump;

Fig. 5 is a transverse sectional view through the port cones;

FigI G is a plan view on a small scale of a modified vform of operating means for the pump. y

Referring to the drawings, it will be seen that the pump-casing is formed with a circular central section and two circular endsections 11, each of said end-sections being provided with an interior wall l2 having ports l2 and which is preferably formed with a conical valve-seat 13 and also spaced from the outer walls to form an end chamber 14;, The central section 10 is provided with two interior walls 15 having ports 15, and each wall 15 is formed with a conical. valveseat 16, 'and these walls 15 are also spaced fronftlie outer wall of the section to form central chamber 17.

Serial No. 880,226.

Mounted between each end section and the central vsection .is a pair of oscillating members 1 8, each of which comprises a double pump-cylinder 19 connected together by a circular valve-section forn'ied of two valverings 20, one on each side of the axial line of the pump-cylinders, and these valve-rings are provided with conical outer faces to engage snugly against correspondingly tapered valve-seats 13 and 1G and provided with radial ports 21 adapted to register with the ports 1Q and 15. These valve-rings are also formed with closed ends The double pump-cylinders (two being shown in the present instance) extend 0utwardly on each side of the central valve-casing and each double cylinder is provided with pistons 22 and 23, one at each end, which ai e connected together to work in unison by cross-heads 24: and connecting-rods 25; and said cross-heads also connect corresponding pistons at each side of the pump.

The chamber' 26 formed between each pair of valve-rings 2O is divided by a vertical wall or partition 27 forming a compartment at each side of the partition, each compartment communicating` with the inner end of one member of the double pump-cylinder.

Oscillating members 18 are each provided with annular' fianges 27 which are adapted to engage over the adjacent edges of the central and end sections, and packing-glands 28 are adjustablyT secured to said flanges 27 for retaining suitable packing-rings 29 in place between the flanges 27 and the peripheries of the stationary cud and central sections which are preferably supported by suitable legs 30.

Each end section is provided with an inletnozzle and the central section is preferably provided with a single discharge` nozzle 32. all of the sections including the central, end, and valve-sections are retained in operative engagement by tie-rod 33 which extends from one end section 11 to the other through bosses 34 preferably formed on said valve-sections. It is obvious that by adjusting the nuts on the ends of this tier-od, any wear can be taken up between the tapered surfaces and v thereby avoid the use of packing at this point. y K

rEhe pump-cylinders are provided at each end with suitable stung-boxes 35, through which the pistons 22 a1id23 operate, andate tached te the cross-head 24 at one end ot the pistons is bracket-bearing 36 in which is journaled a crank-pin carried by a crank l? on a shaft 38 mounted in suitable bearings and carrying a driving-pulley 39.

The arrangement o1c the ports in the eral sections is clearly shown'in Fig. 5 o` the drawings, wherein it will be observed that the arrangement is such that, when the cylinders are oscillated from axial line A t0 aXial line B, or anti-clockwise, the ports 20 at the left-hand side ot the partition 27 will open in register with. ports in the outer ring, and the ports 2O on the ring-hand side will remain closed, but, whenthe oscillation is clockwise, then the ports on the right-hand side are opened and the ones on the opposite side are closed. v

In operation, when the pistons are reciprocated, they will be alternately forced in and drawn out of the opposite ends of the cylinder, as showny in Fig. 4l. lhen the pistons 22 are being drawn out in the direction of the arrow D, the suction is drawing liquid through the nozzles 8l on both sides 'of the pump, into the end chambers 14 and through registering ports 12 and 13 into the pump-cylinders and the chambers adjacent thereto'onone side ot the partitions 2'?, and at the same time t-he pistons on the opposite side of the pump, moving in the Vdirection of the arrow E, are iorcing the liquid previously drawn through ports 2l and 15, central chamber i7, and yout through nozzles 32. lt will be observed that the liquid is drawn into the pump at both ends simultaneously through the two inlet-nozzles 31, and discharged throughthe one nozzle 32.

This pump is an improvement over the construction shown in my Patent No. 837,- 342, and is especially adapted for use where a large supply et liquid under a powerful head is desired;

It will loe apparent to those skilled in the art that various mechanical embodiments of' the invention are possible, and l. therefore do not wish to be limited to the exact arrangement and construction shown.

ln the modified form shown in Fig. tl, a crank is provided for each plunger which are adapted to operate the said plungers alternately with respect to each other and, consequently, the plungers in the same manner by means of the connecting-rods 25t Thus, instead ot creating suction simultaneously in both cylinders 19 on one side of the central casings and simultaneously torcing water to the outlet in both cylinders on opposite side et the casings, as in the Fig. l construction, the action-in the cylinders 19 on the same side ot' the casings is opposite; that is, one is creating suction while the other ,is forcing water to the outlet ln this manner, one cylinder on the opposite sides of the casing is forcingv and the remaining cylinders are sucking, thereby balancing the pressures during the pumping operation and securing a more continuous iiow.

klllhat I claim is:

l. A pump comprising a central and end stationary sections, each having tapered annular interior walls provided with ports, pump-cylinder sections mounted to oscillate between said central and end sections, each ot said pump-cylinder sections embodying valve-sections formed with tapered valverings having ports adapted to alternately register with and close the ports et the end and central stationary sections, a pump-cylinder each side of said valve-section, means tor clamping said central, end and pumpcylinder sections together in operative relation, a piston in each ot said pump-cylinders, means tor connecting the outer end ot all of said pistons together to operate in unison, and means for reciprocating said pistons to and fro in said pump-cylinders and also oseillate the pump-cylinder sections to close and open the ports therein.

2. A pump comprising a central and end stationary sections each having tapered a-nnular interior walls provided with radial ports, pump-cylinder sections mounted to oscillate between said central and end sections, each pump-cylinder section embodying a double-ended cylinder having au imperferate partition midway its ends and valverings tapered in opposite directions and formed with closed ends, means tor adjustably clamping said tapered parts in operat-ive relation, pistons adapted to reciprocate in both ends ot each double-ended cylinder, means connecting all of the pistons together` means tor reciprocating the pistons and For operating those on one side oi the pump in an opposite direction to those on the other :trom the center of the pump and also simultaneously oscillating` the cylinders and valverings to open and close the ports.

3. A pump comprising a central and end stationary sections each having tapered aunular interior walls. said central section havinginterior walls at each side thereot and tapered in opposite directions to cach other. said ,interior walls of the end sections being tapered in opposite direction to the interior walls ot the central section lying `opposite thereto, all ot said interior walls being spaced trom the outer walls ot thc sections and provided with radial ports` ea ch of said end sections being provided with an outlet opening and said central section being provided with a discharge opening, pump-cylinder sections mounted to oscillate between each end section and the central section, each o't said pump-cylinder sections embodyingr a double-ended c vlinder having an imperferate partition midway its ends and op iovr sit-ely tapered valve-members adapted to engage the tapered inner rails of the end and central seotions,.said valve-members having` of the pistons together, and means for closed ends and also being provided With reciprocating the pistons and oscillating the radial ports to register with the ports in said pump-cylinder. l0 interior Walls, means for clamping the In testimony whereof I hereunto aiix my tapered valve-members and interior Walls in signature. operative position, pistons in both ends of each double cylinder, means connecting all ANDREW J. ROSS. 

